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Annotation of 43BSD/contrib/icon/book/16/ldag.icn, revision 1.1.1.1

1.1       root        1: procedure ldag(stree,done)
                      2:    local a
                      3:    /done := table()            # start table
                      4:                                # return list if done
                      5:    if a := \done[stree] then return a
                      6:    stree ?                     # build like a tree
                      7:       if a := [tab(upto('('))] then {
                      8:          move(1)
                      9:          while put(a,ldag(tab(bal(',)')),done)) do
                     10:             move(1)
                     11:          }
                     12:       else a := [tab(0)]
                     13:    return done[stree] := a     # put in table
                     14: end

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